42121000412 has 24 divisors (see below), whose sum is σ = 76929875232. Its totient is φ = 20141352000.

The previous prime is 42121000403. The next prime is 42121000447. The reversal of 42121000412 is 21400012124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 543362 + ... + 616022.

It is an arithmetic number, because the mean of its divisors is an integer number (3205411468).

Almost surely, 2^42121000412 is an apocalyptic number.

It is an amenable number.

42121000412 is a deficient number, since it is larger than the sum of its proper divisors (34808874820).

42121000412 is a wasteful number, since it uses less digits than its factorization.

42121000412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78989 (or 78987 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 42121000412 its reverse (21400012124), we get a palindrome (63521012536).

The spelling of 42121000412 in words is "forty-two billion, one hundred twenty-one million, four hundred twelve", and thus it is an aban number.